
Here we have assumed the electrolyte is ideal such that \(\mu _\mathrm {e}= RT \log (c_\mathrm {e}/c_{\mathrm {e}0})\) .In  [1]} this integration is accomplished numerically, in [2]} it is performed analytically, and in [3]} an approximation based on a near constant concentration \(c_\mathrm {e}\approx c_{\mathrm {e}0}\)  is used.
